I've only ever shrunk, not enlarged, but the process is very similar. Is this a body part or an accessory? Accessories are usually a little more forgiving. I'm happy to walk you through it if you want to try it yourself, or you can PM me and we can work out something where I can maybe do it for you.
From world of nintendo samus.
But the figure is in a weird 4" scale.
Looks like a telephone pole on 3" figures.
and is short and narrow on 6".
If I only need it once..
I don't want to invest in a whole set of equipment.